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    PWM STRATEGY FOR REGENERATIVE MULTILEVEL DRIVE
    42.
    发明公开
    PWM STRATEGY FOR REGENERATIVE MULTILEVEL DRIVE 审中-公开
    PWM-STRATEGIEFÜRREGENERATIVEN MEHRSTUFIGEN ANTRIEB

    公开(公告)号：EP3083468A4

    公开(公告)日：2017-08-16

    申请号：EP13899621

    申请日：2013-12-18

    Applicant: OTIS ELEVATOR CO

    Inventor： AGIRMAN ISMAIL ,  KRISHNAMURTHY SHASHANK ,  NAGARAJAN PRASANNA ,  KIM HANJONG ,  WANG YANG

    IPC: B66B1/30 ,  B66B11/04

    CPC classification number: B66B1/302 ,  B66B9/00 ,  B66B11/043 ,  H02M7/487 ,  H02P27/08

    Abstract: A method (70) for controlling a multilevel regenerative drive (30) having a converter (32) and an inverter (34) is disclosed. The method (70) may include applying at least one of unipolar modulation and bipolar modulation to the converter (32), and applying at least one of unipolar modulation and bipolar modulation to the inverter (34). A control system (52) for a mechanical system (20) having a motor (28) is also disclosed. The control system (52) may comprise a converter (32) operatively connected to a power source (29), and an inverter (34) operatively connected to the motor (28) of the mechanical system (20). At least one controller may be in communication with the converter (32) and inverter (34), and may be configured to apply at least one of unipolar modulation and bipolar modulation to each of the converter (32) and the inverter (34).

    Abstract translation: 公开了一种用于控制具有转换器（32）和逆变器（34）的多级再生驱动器（30）的方法（70）。 方法（70）可以包括将单极调制和双极调制中的至少一个应用于转换器（32），并且将单极调制和双极调制中的至少一个应用于逆变器（34）。 还公开了一种用于具有马达（28）的机械系统（20）的控制系统（52）。 控制系统（52）可以包括可操作地连接到电源（29）的转换器（32）以及可操作地连接到机械系统（20）的电动机（28）的逆变器（34）。 至少一个控制器可以与转换器（32）和逆变器（34）通信，并且可以被配置为向转换器（32）和逆变器（34）中的每一个施加单极调制和双极调制中的至少一个。

    ELEVATOR CAR SPEED CONTROL IN A BATTERY POWERED ELEVATOR SYSTEM
    43.
    发明公开
    ELEVATOR CAR SPEED CONTROL IN A BATTERY POWERED ELEVATOR SYSTEM 审中-公开
    控制电梯轿厢速度在电池供电的升降系统

    公开(公告)号：EP2956395A4

    公开(公告)日：2016-10-26

    申请号：EP13875300

    申请日：2013-02-14

    Applicant: OTIS ELEVATOR CO

    Inventor： AGIRMAN ISMAIL

    IPC: B66B1/30

    CPC classification number: B66B1/302 ,  B66B1/308 ,  B66B5/14

    Abstract: An elevator system includes a battery; a machine having a motor for imparting motion to an elevator car; an inverter for converting DC power from the battery to AC power for the machine in motoring mode and converting AC power from the machine to DC power for the battery in regenerative mode; and a controller to control the inverter, the controller implementing at least one of: detecting an overload at the battery in motoring mode and reducing car speed in response to the overload; detecting an overcharge at the battery in regenerative mode and reducing car speed in response to the overcharge; detecting motor direct current in a motor field weakening mode and reducing car speed in response to the motor direct current; and detecting car load and adjusting car speed in response to car load.

    ELEVATOR SPEED CONTROL
    48.
    发明公开
    ELEVATOR SPEED CONTROL 审中-公开
    提升速度控制

    公开(公告)号：EP2931639A4

    公开(公告)日：2016-08-10

    申请号：EP12889747

    申请日：2012-12-13

    Applicant: OTIS ELEVATOR CO

    Inventor： AGIRMAN ISMAIL ,  PIEDRA EDWARD

    IPC: B66B1/30

    CPC classification number: B66B1/30 ,  B66B1/308 ,  B66B5/145

    Abstract: Embodiments are directed to calculating a current associated with a motor of an elevator based on an output of a speed regulator, and controlling the elevator based on the current. Embodiments are directed to examining a feeder current obtained via a converter current sensor of a regenerative drive during a peak power condition, and regulating a speed of an elevator based on the feeder current.

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